Conservation planning for connectivity across marine, freshwater, and terrestrial realms
2010
Beger, Maria | Grantham, Hedley S. | Pressey, Robert L. | Wilson, Kerrie A. | Peterson, Eric L. | Dorfman, Daniel | Mumby, P. J. (Peter J) | Lourival, Reinaldo | Brumbaugh, Daniel R. | Possingham, Hugh P.
Conservation plans are usually developed for regions that encompass only one environmental realm (terrestrial, freshwater or marine) because of logistical, institutional and political constraints. This is inadequate because these realms often interact through processes that form, utilize and maintain interfaces or connections, which are essential for the persistence of some species and ecosystem functions. We present a conceptual framework for systematic conservation prioritization that explicitly accounts for the connectivity between the terrestrial, marine, and freshwater realms. We propose a classification of this connectivity that encompasses: (1) narrow interfaces, such as riparian strips; (2) broad interfaces, such as estuaries; (3) constrained connections, such as corridors of native vegetation used by amphibians to move between natal ponds and adult habitat; and (4) diffuse connections, such as the movements of animals between breeding and feeding habitats. We use this taxonomy of inter-realm connectivity to describe existing and new spatial conservation prioritization techniques that aim to promote the persistence of processes that operate between realms.
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